Hothead

https://backpack.tf/item/1345283380

Sale 1) Sold for 15 Keys

https://backpack.tf/profiles/76561198079460753#!/compare/1558569600/1558828800

https://backpack.tf/profiles/76561198297024647#!/compare/1558569600/1558828800

Sale 2) ?

https://backpack.tf/profiles/76561198297024647#!/compare/1559347200/1564444800

https://backpack.tf/item/832871431

Sale 3) ?

https://backpack.tf/profiles/76561198912188810#!/compare/1562716800/1563235200

https://backpack.tf/profiles/76561198342161127#!/compare/1563148800/1563235200

Sale 4) ?

https://backpack.tf/profiles/76561198342161127#!/compare/1563148800/1563235200

https://backpack.tf/profiles/76561198082121181#!/compare/1563494400/1564444800

https://backpack.tf/item/811841799

Sale 5) Sold + ~5 Keys of Items for a Purple Confetti Killer's Kabuto + 2 Keys

https://backpack.tf/profiles/76561198430787433#!/compare/1564444800/1564531200

https://backpack.tf/profiles/76561198060458887#!/compare/1564444800/1564531200

Using this for the Kabuto.

Sale 6) Sold + 4 Keys + ~2 Keys of Items for a Purple Energy Head Full of Hot Air

https://backpack.tf/profiles/76561198332034962#!/compare/1564444800/1564531200

https://backpack.tf/profiles/76561198438525576#!/compare/1564444800/1564531200

This is being used for the Hot Air.

Sale 7) Sold for a Kill-a-Watt Safe'n'Sound + ~1 Key of Items

https://backpack.tf/profiles/76561198438525576#!/compare/1564531200/1564617600

https://imgur.com/a/YEI3QTh - Capped by the Buyout of 16 Keys

Safe'n'Sound Mini

https://backpack.tf/profiles/76561198198638085#!/compare/1560556800/1560643200 - Sold for 18 Keys

https://backpack.tf/profiles/76561198131081286#!/compare/1564185600/1564358400 - Sold for an Ancient Eldritch Smokey Sombrero

https://backpack.tf/profiles/76561198243519680#!/compare/1564617600/1564704000 - Sold for a Vivid Plasma Buckaroos Hat

https://backpack.tf/profiles/76561198243519680#!/compare/1564704000/1564790400 - Sold for a Neutron Star Bot Dogger

https://imgur.com/a/vkBJQUT - The Smokey has Buyers above 16 Keys

Sale 8) Sold for a Cauldron Bubbles Counterfeit Billycock (16 Keys)

https://backpack.tf/profiles/76561198411578160#!/compare/1565049600/1565222400

https://backpack.tf/item/633952488

Sale 9) ?

https://backpack.tf/profiles/76561198337734785#!/compare/1562198400/1562284800

https://backpack.tf/profiles/76561198212662673#!/compare/1562284800/1562371200

https://marketplace.tf/items/tf2/183;5;u33 - Sold for $35.58 when Keys were ~$1.81 each

https://marketplace.tf/items/tf2/5021;6

35.58 / 1.81 = 19.66, which rounds to 20 Keys

https://imgur.com/a/skaouJ4 - 22 Day Seller at 18 Keys

https://backpack.tf/item/832871431